Jonathan Hurley created AMBARI-17319:
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Summary: Provide More Warnings and Messages About Hive's Port
Change During Upgrade
Key: AMBARI-17319
URL: https://issues.apache.org/jira/browse/AMBARI-17319
Project: Ambari
Issue Type: Bug
Components: ambari-server
Affects Versions: 2.4.0
Reporter: Jonathan Hurley
Assignee: Jonathan Hurley
Priority: Critical
Fix For: 2.4.0
After upgrading from HDP 2.2.4.2 to HDP 2.3.2, the {{hive.server2.thrift.port}}
changed from 10000 to 10010.
For users and applications which reference Hive via a direct URL/port
combination instead of a discovery URL, they will no longer be able to contact
Hive.
Due to the timing of the next Ambari release, there is a risk of regression
with any attempt to fix this issue. The best option is to provide a more
wizard-like approach where Ambari can use the upgrade packs to ask questions
pertaining to the upgrade. The results of those questions will be passed along
with the upgrade pack when starting an upgrade so that rudimentary decision
paths can be taken while performing orchestration. *However, this is out of
scope for this release*.
Instead, the following tasks can be chosen to be implemented in part or as a
whole in an attempt to alleviate this issue.
*Recommended*
h5. Task 1 (Simple Messages)
h6. Development effort: 1 day
- A new pre-requisite check will be created which will determine if the upgrade
is rolling and if Hive is installed. If both conditions are met, a {{WARNING}}
will be triggered which will say something similar to:
bq. You have chosen to perform a rolling upgrade and Hive is currently
installed. Hive supports rolling upgrades, but its port will change as a result
of the upgrade. If this is not the desired behavior, then the port can be
changed back to its original value after the upgrade has completed.
- A new message will be added and displayed to the user post-finalization.
bq. The hive server port has changed as a result of this rolling upgrade. If
this port change is not desired, then you can now use Ambari to return hive to
its original port.
h5. Task 2 (Messages To Alter Configurations)
h6. Development effort: 4 days total
- A new pre-requisite check will be created which will determine if the upgrade
is rolling and if Hive is installed. If both conditions are met, a {{WARNING}}
will be triggered which will say something similar to:
bq. You have chosen to perform a rolling upgrade and Hive is currently
installed. Hive supports rolling upgrades, but its port will change as a result
of the upgrade. If this is not the desired behavior, then you can choose to set
the {{ambari.upgrade.hive.rolling}} property to {{false}} in {{hive-site}}
before continuing with this upgrade. When set to {{false}}, Hive's port will
not change during the upgrade, but Hive will incur downtime while it is
restarted during the upgrade.
- The Hive upgrade scripts will change to look for
{{ambari.upgrade.hive.rolling}} and will choose to do a {{stop}} and a
{{start}} instead of a {{deregister}}
- The XML upgrade packs will be changed to look for
{{ambari.upgrade.hive.rolling}} and only change the hive port based on this
property being {{true}}.
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